Reburning thermal and chemical processes in a two-dimensional pilot-scale system

Lanier, W.S.; Mulholland, James A.; Beard, J. T.

doi:10.1016/s0082-0784(88)80348-5

Cited by 29 publications

(33 citation statements)

References 2 publications

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“…In 17 experiments the C 2 absorption was measured with the ring-dye-laser spectrometer to determine the overall rate coefficient of the reaction Additionally, in 5 experiments C ϩ NO : products. 2 O-atoms and in 6 experiments N-atoms were measured using the ARAS technique. In all experimental runs the CCD-camera spectrograph was employed to monitor the spectral emission of CN and C 2 .…”

Section: Resultsmentioning

confidence: 99%

“…The dashed lines in Figure 2 and 3 correspond to computer simulations that will be discussed later. Figure 4 shows the spectral emission at a reaction time of extracted from the time-and wave-200 s, length resolved spectrum recorded with the CCD-camera spectrograph during an experiment with 10 ppm C 2 …”

Section: Resultsmentioning

confidence: 99%

“…C ϩ NO 9 9 : products (R5) 2 For a detailed study of this reaction, computer simulations of the experimentally obtained C 2 , O, N, and CN profiles were performed. Other possible pertur- …”

Section: Perturbation Of the C 2 By Nomentioning

confidence: 99%

“…There are two room temperature studies by Reisler et al [7,8] that discuss possible products channels and give an overall room temperature depletion rate of C 2 in the presence of NO. A molecular beam study by Krause [9] gives mechanistic informations about the four-center reaction C ϩ 2 In a spectroscopic study on nitric NO : CN ϩ CO. oxide-acetylene flames, Le and Vanpee [10] come to the qualitative result that the reaction of C 2 with NO is "extremely fast." However, to our knowledge there exist up to now no quantitative kinetic data at combustion relevant temperatures on this reaction.…”

Section: Introductionmentioning

confidence: 99%

“…C ϩ NO 9 9 : products (R5) 2 at high temperatures. The four exothermic product channels for this reaction are:…”

Section: Introductionmentioning

confidence: 99%

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High-temperature reaction of C2 with NO including product channel measurements

Kruse¹,

Roth²

1999

Int. J. Chem. Kinet.

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The reaction of C 2 radicals with NO was studied behind reflected shock waves in the temperature rangeThe shock-induced pyrolysis of acetylene, highly 3150 K Յ T Յ 3950 K. diluted in argon, was used as a well defined source for C 2 radicals, which were detected by ring-dye-laser absorption spectroscopy (RDLAS) atThe perturbation of the C 2 by 516.646 nm. the addition of NO to the initial mixtures results in a fast removal of the C 2 radicals, which is mainly caused by the reaction: k ϭ 7.5 ϫ 10 ϫ exp(Ϫ4350/T)cm mol s 5 was obtained. The product channels of this reaction were studied by additional measurements of O-atoms, N-atoms, and CN radicals. O and N were detected using atomic resonance absorption spectroscopy (ARAS) and the CN radicals were followed by their emission using a spectrograph and an intensified CCD-camera. The reactions leading to the product channels and to were identified as the main channels with a branchingratio of and while the channel leading to was found k /k ϭ 70% k /k ϭ 30%, CN ϩ CO (R5c) to be neglectable.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Perturbation Of the C 2 By Nomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…C ϩ NO 9 9 : products (R5) 2 at high temperatures. The four exothermic product channels for this reaction are:…”

Section: Introductionmentioning

confidence: 99%

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High-temperature reaction of C2 with NO including product channel measurements

Kruse¹,

Roth²

1999

Int. J. Chem. Kinet.

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Low NO_x, high efficiency multistaged burner: Gaseous fuel results

Srivastava

Mulholland

1988

Environ. Prog.

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Theoretical study on the mechanism of the ³CH₂ + NO₂ reaction

Liu

Tao

et al. 2002

J Comput Chem

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The complex doublet potential energy surface of the CH(2)NO(2) system is investigated at the B3LYP/6-31G(d,p) and QCISD(T)/6-311G(d,p) (single-point) levels to explore the possible reaction mechanism of the triplet CH(2) radical with NO(2). Forty minimum isomers and 92 transition states are located. For the most relevant reaction pathways, the high-level QCISD(T)/6-311 + G(2df,2p) calculations are performed at the B3LYP/6-31G(d,p) geometries to accurately determine the energetics. It is found that the top attack of the (3)CH(2) radical at the N-atom of NO(2) first forms the branched open-chain H(2)CNO(2) a with no barrier followed by ring closure to give the three-membered ring isomer cC(H(2))ON-O b that will almost barrierlessly dissociate to product P(1) H(2)CO + NO. The lesser followed competitive channel is the 1,3-H-shift of a to isomer HCN(O)OH c, which will take subsequent cis-trans conversion and dissociation to P(2) OH + HCNO. The direct O-extrusion of a to product P(3) (3)O + H(2)CNO is even much less feasible. Because the intermediates and transition states involved in the above three channels are all lower than the reactants in energy, the title reaction is expected to be rapid, as is consistent with the measured large rate constant at room temperature. Formation of the other very low-lying dissociation products such as NH(2) + CO(2), OH + HNCO and H(2)O + NCO seems unlikely due to kinetic hindrance. Moreover, the (3)CH(2) attack at the end-O of NO(2) is a barrier-consumed process, and thus may only be of significance at very high temperatures. The reaction of the singlet CH(2) with NO(2) is also briefly discussed. Our calculated results may assist in future laboratory identification of the products of the title reaction.

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Reburning thermal and chemical processes in a two-dimensional pilot-scale system

Cited by 29 publications

References 2 publications

High-temperature reaction of C2 with NO including product channel measurements

High-temperature reaction of C2 with NO including product channel measurements

Low NO_x, high efficiency multistaged burner: Gaseous fuel results

Theoretical study on the mechanism of the ³CH₂ + NO₂ reaction

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Reburning thermal and chemical processes in a two-dimensional pilot-scale system

Cited by 29 publications

References 2 publications

High-temperature reaction of C2 with NO including product channel measurements

High-temperature reaction of C2 with NO including product channel measurements

Low NOx, high efficiency multistaged burner: Gaseous fuel results

Theoretical study on the mechanism of the 3CH2 + NO2 reaction

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Product

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About

Low NO_x, high efficiency multistaged burner: Gaseous fuel results

Theoretical study on the mechanism of the ³CH₂ + NO₂ reaction